Material conveyer



39 1933' H. H. WEHSS L@2,2

MATERIAL CONVEYER Filed Nov; 24, 1930 Patented Jan. 3, 1933 may a. wuss,or cmcaeo, rumors MATERIAL CONVEYEB Application filed November 24, 1980.Serial N'o. 497,946.

My invention relates to material conveyors, and more particularly tothat type in WhlCh a steam jet is used to create a suction for theconveyance of ashes through a conduit for deposit in an elevator tank.

One object of my invention is to interpose a vacuum producer in aconduit line at a point near an elevated tank, in order that the ashesmay travel dry through the conduit and impart a minimum of wear to thewalls thereof.

A further object of the invention is to design the novel materialconveyers with a vacuum producer comprising an assembly of three units,viz. a steam chamber, an expansion chamber, and a Venturi tube.

A still further object of the invention is to include in such novelproducer an annular steam chest from which any number of steam jets maybe extended for cooperative action.

Another object of the invention is to make the Venturi tube of the novelvacuum producer easily separable from the assembly thereof, in orderthat it may be readily replaced in case of wear.

An additional object of the invention is to design the expansion chamberof the vacuum producer with a removable section, which permits easyaccess to the steam nozzles for the replacement or repair thereof.

A final but nevertheless important object of the invention is toconstruct the novelvacuum producer on lines of ruggedness, simplicityand economy.

With the above objects in view and any others that may suggestthemselves from the specification and claims to follow, a betterunderstanding of the invention may be had by reference to theaccompanying drawing, in which- Fig. 1 is an elevation of a typical ashconveying system of the type mentioned;

Fig. 2 is a plan section of the novel vacuum producer; and

' Fig. 3 is an end view of the latter. taken from the right hand side.

Referring specifically to the drawing, 5 denotes a power plant havingash outlets 6 which lead into a horizontal suction run 7 forming a partof the ash conduit. This run takes an upward curvature 7a to form ariser 8 which in turn takes a curvature 8a. to form an elevatedhorizontal run 9 extending over a receiving tank 10. The connectionbetween the run 9 and the tank 10 is in the form of a baflle box 11, andin the said run is also interposed the vacuum producer 12.

As more clearly indicated in Figs. 2 and 3 the vacuum produceroriginates with a central'nipple 13, which is suitably flanged at 1311for connection with one of the conduit sections. The nipple 13 isenlarged radially with an annular chamber 14, whose periphery is tappedin one place or in two places as shown, to receive steam pipes 15. Thefrontal Wall of the chamber 14 is perforated at a number of places asindicated at 14a and receives screw nozzles 16 from without, thesenozzles being inclined in the direction of the nipple axis whereby toeject steam jets formed in accordance with the dot-and-dash illustrationin Fig. 2, the space outlined by such illustratipn indicating theblending of two diametrically-opposite jets to produce a single one.

The nipple 13 is also marginally flanged at its frontal end, asindicated 13b for application by bolts 130 to the flange 17 a of afrustoconical expansion chamber 17'. As indicated in Fig. 2; thischamber is made in two halves which may be assembled by bolts 18, one ofthese halves being removable without unfastening the chamber from itsflanged connections.

Frontally of the expansion chamber 17 is applied the Venturi tube 12,this tube being jets may be taken in a circle. This construction permitsthe steam jets and nozzle therefor to occupy a true circular position atany radial point and to be outside of the path of air and ashes enteringthe vacuum roducer .by way of the nipple 13. By providing the expansionchamber, the air and ashes 4 it is an easy matter to remove the lidportion of the chamber 17 for the replacement or repair of the nozzleswithout dismantling the assembly of the vacuum producer.

' inlet, a pressure chamber surrounding thepansion chamber, saidremovable wall The vacuum producer 12 also has a frontal flange 120 forbolting to the conduit run in which the vacuum producer is located, andwhen the Venturi tube has received excessive wear, the bolts in theflanges may be readily removed and the Venturi tube quickly replaced. I

It is thus seen that the novel vacuum producer is located practically atthe remote end of the ash condult, so that the ashes travel in theconduit free of moisture or steam and will not adhere to the walls ofthe conduit. Also, the'remote location of the vacuum producer insures.the continued travel of the ashes whatever the reasonable length of theconduit may be. The novel vacuum producer itself is constructed in .arugged and simple manner and has the economical advanta es describedwhereby to make possible quick replacements, immediate attentian toparts which receive wear, and to eliminate delays in servicing theequipment. I

I claim inlet, a pressure chamber- 'surrounding the inlet, a pluralityof removable discharge nozzles communicating with said chamber, a casingproviding an expansion chamber and having a removable wall portionarranged about the nozzles, and a Venturi tube secured to said casingand extending from the exportion being so arranged whereby the nozzlesare accessible for replacement.

to. provide a removable wall whereby the" nozzles are accessible forreplacement and a Venturi tube removably secured to one end of saidcasingmand extending from the exsteam chest including an inner wallportion I formed with converging threaded openings 1n circularly spacedrelation and terminating at 1ts edges into an annular flange, an expan-S1011 chamber casing formed of a plurality of sections bolted together,said casing bein secured to the'annular flange of said walla oresard andsaid nipple having its inner end extendlng into said chamber, and nozzleelements threadedly engaged in said threaded openings in the inner .wallof said steam chest and'converging toward a point axially of said inletnipple.

5 A material conveyer including a condult, an open ended inlet ni plehaving its outer end secured to saidcon uit, an annular manifoldsurrounding said nipple, said manifold having an inner wall portionprovided with threa ed circularly spaced openings, discharge nozzles,fitted in said openings, a sectional casing secured at one end to theinner wall of said manifold and providing a frusto-conical expansionchamber surrounding. said discharge nozzles and into which extends theinner end of said inlet nipple, onesection of said casing beingremovable to give-access to said nozzles, and a Venturi tube secured tothe other end of said casing andmerging with said frustoconicalexpansion chamber.

In testimony whereof I aflix my si 7 HARRY H.

ature, I88.

2. A material conveyer comprising an inlet, a plurality of removabledischarge nozzles communicating with said chamber, a longitudinallidivided casing providin an expansion c amber arranged about t e nozzles,and a Venturi tube secured to one end of said casing and extending fromthe expansion chamber, said casin removable lid portion where% areaccessible for replacement.

3. A material conve er comprising an providing a inlet nozzle, a ressurec amber surrounding of c1rcum-' the nozzle and aving a plurali:terentially. arranged threade openings y the nozzles I no therein, aplurality of threaded discharge nozzles arranged in said openings, acasing roviding a frusto-conical expansion chamr surrounding saiddischarge and inlet noz zles, said casing splitlongitudinally

